No, it is not a chemical reaction. Chemical reactions occur when one or more chemical compound reacts to give one or more different chemical compounds. When oil and water are mixed, they can be separated to give the original amounts of oil and water without any new chemical compounds <==============================================3
It is a physical change because the oil and the water do not change in chemical composition.
Physical. Anything that can be separated by physical means is a physical change, and you can separate oil from vinegar by skimming it off the top. You are also not making a new substance. In order to have a chemical reaction occur you must produce a new substance, not just a mixture. For example, vinegar and baking soda will produce carbon dioxide gas.
your mixing two chemicals together so of course its a chemical change
Oil floating on water is not a "change", so asking whether it's a physical change or a chemical one is nonsense. To the extent there's any meaning at all to the question, it's a phenomenon caused by the physical properties of the two materials.
Substances like oil and water can mix without undergoing a chemical reaction, forming a mixture. Similarly, sugar and water can dissolve into each other without a chemical reaction occurring. These are physical changes where the substances retain their original properties.
No, it is a physical process.
yes because salad dressing is a suspension of vinegar that will separate into layers if left undisturbed.
It is a physical change because the oil and the water do not change in chemical composition.
When oil and water mix it is due to an emulsifier being added to the solution. The emulsifier has one hydrophobic tail which will attach to the oil and one hydrophilic tail which attaches to the water. It is more of a chemical change than a physical one since the oil and water don't change state, however they will not form an emulsification without an aid so its technically not due to a chemical reaction between the water and oil alone either.
This is not a chemical reaction. When this happens it is clearly just called Chemical Seperation as the two chemicals do not bind due to density.
Physical. Anything that can be separated by physical means is a physical change, and you can separate oil from vinegar by skimming it off the top. You are also not making a new substance. In order to have a chemical reaction occur you must produce a new substance, not just a mixture. For example, vinegar and baking soda will produce carbon dioxide gas.
Water does not mix with oil because oil is hydrophobic and water is hydrophilic. Mixing water with oil will result in the water forming droplets or a separate layer due to their different chemical properties.
no oil and water do not mix
no reaction
your mixing two chemicals together so of course its a chemical change
Oil and water do not react chemically; they are immiscible due to differences in polarity. Oil is nonpolar and water is polar, so they do not mix and form separate layers instead.
Oil floating on water is not a "change", so asking whether it's a physical change or a chemical one is nonsense. To the extent there's any meaning at all to the question, it's a phenomenon caused by the physical properties of the two materials.